81 乘法 8 等于多少？

81 × 7 = 567 81 × 9 = 729 81 × 6 = 486 81 × 10 = 810 81 × 11 = 891 81 × 5 = 405 81 × 12 = 972 81 × 4 = 324 80 × 8 = 640 82 × 8 = 656 83 × 8 = 664 79 × 8 = 632 84 × 8 = 672 78 × 8 = 624 85 × 8 = 680 77 × 8 = 616 8 × 81 = 648 9 × 72 = 648 12 × 54 = 648 18 × 36 = 648 24 × 27 = 648 27 × 24 = 648 61 × 1 = 61 19 × 56 = 1064 12 × 38 = 456 89 × 1 = 89 80 × 59 = 4720 26 × 24 = 624 70 × 8 = 560 37 × 32 = 1184